目前封裝金鑰 ID：admin-rsa-2026-03Current wrapping key id: admin-rsa-2026-03
處理模式：管理後台下載後自動刪除Mode: admin download with automatic purge after retrieval
20%：整合封包與本機金鑰準備20%: package build and local key setup
50%：本機分片與逐片加密50%: local chunking and per-chunk encryption
80%：密文分片寫入雙儲存80%: ciphertext chunks written to dual storage
90%：加密 manifest 完成90%: encrypted manifest finalize
100%：等待管理者下載100%: waiting for admin retrieval
VPS 僅接收密文與 wrapped key；未配置 admin 公鑰時，前端會拒絕開始。The VPS only receives ciphertext and a wrapped key. Upload is blocked until an admin public key is configured.